Zinc Sulfate Heptahydrate 22%

Specification

The molecular formula is ZnSO4 · 7H2O,molecular weight: 287.54,soluble in water,insoluble in ethanol.The solution is acidic,pH value is about 4.5, the melting point is 39 ° C, the relative density is 1.957, the product is white or yellowish oblique crystal.

Zn: 22% min

ZnSO4.7H2O: 97%min

Insoluble substance: 0.050 max

PH: 3.0 min

CI: 0.60 max

Pb: 0.010 max

Fe: 0.020 max

Mn: 0.10 max

Cd: 0.010 max